I'm not an expert, but I like the question a lot. My best guess from some scrolling through industrial parts ordering websites is that they're called "pistol grip levers".

Here's a couple examples found using that as a query: https://images.app.goo.gl/NRHyawiKxrsvZUhu5 https://images.app.goo.gl/9qyhBAdqBy9Tqxxh9